Albin flechtner



(No Model.)

A. FLEOHTNER. DAMPER FOR HOUSEHOLD STOVES.

Patented Mar. 14, 1893.

:5:- [Filliii-udn-AI U ITED STATES PATENT OFFICE.

ALBI'N FLECHTNER, OF METZ, GERMANY.

DAM PER FOR HOUSEHOLD-STOVES.

SPECIFICATION forming part of Letters Patent No. 493,580, dated March14, 1893.

Application filed October 28, 1891. Serial No. 410,056. (No model.)

To It whom it may concern.-

Be it known that I, ALBIN FLECHTNER, a subject of the German Emperor,residing at Metz, in the German Empire, have invented a certain new andImproved Damper for Household-Stoves, of which the following is a full,clear, and exact description.

My invention relates to a damper or draft regulator for householdstoves, and its object is to provide a device, by means of which, thetemperature of a room may be more sensitively regulated thanheretofore,without however allowing the carbonic oxide, constantly beinggenerated, to escape into the room. The device, by means of which Iattain this object consists mainly of a throttle disk pivoted in thechimney or flue and having interior perforations which may be covered oruncovered by means of a rotary disk pivotally arranged on the throttledisk; in addition to this the latter is provided with an outer circle ofperforations, which are permanently open to allow the carbonic oxide toescape at all times.

In order to make this description more easily intelligible, I refer tothe accompanying drawings, in which similarletters denote similar partsthroughout the several views.

Figure 1 shows the damper in elevation when in a closed position. Fig. 2is the same elevation with the damper open. Fig. 3 is a sectionalelevation of a flue with a damper arranged therein.

a and b are two disks the former being pivoted in the chimney at c d,while the latter is centrally pivoted to the former at f. The disk I) isprovided with central perforations t" arranged to correspond with thoset of disk at which has, in addition to the holes 41, an outer ring ofperforations k which are permanently opened. The disk I) is furtherprovided with a pin 9 engaging in a slot arranged in a short arm of therod h. The disk I) may be partially revolved on disk at by pulling therod it down or out, as shownin Fig. 2. The rod 72, is guided in a sleevem, which is attached to the trunnion d and advantageously provided withan arrow n at its lower end, serving as handle and at the same timepointer showing the position of the throttle disks a. b. Aspring m isarranged round the sleeve 1% and presses at one end against the exteriorof the flue or chimney and at the other end against the arrow a orcollar of the same. This spring m has the purpose of retaining thedamper a b in any position, into which it may be placed, by holding itmore tightly against theinterior of the flue or chimney. By revolving oradjusting the disk 1') on disk at, the perforations may be made tocorrespond as shown in Fig. 2, when the draft will be increased. Theposition of the throttle disk with regard to the flue can be varied, byadjusting the same on its pivots c, d. When the throttle is closed inthe chimney, the carbonic oxide can escape through the outer circle ofperforations It, while the draft maybe more sensitively regulated byadjusting the disk I) or disk a by means of rod it.

My improved damper, besides effecting considerable saving in fuel,permits of more sensitive regulation of the draft and consequently amore advantageous generation of heat.

Having now particularly described and ascertained the nature ofmyinvention and manner of performing the same, what I claim is Thecombination of a disk at pivoted at c and din the chimney or flue, andhaving outer ring of perforations 7c, inner perforations'i and handle 72mounted in sleeve m of the hollow trunnion d, and having retainingspring m, with a disk 1), centrally pivoted to and smaller than saiddisk a, said disk I) having perforations 2" corresponding to theperforations iof disk a, having further pin 9 and operating rod 71. withrectangular slotted arm engaging pin 9, said rod It being guided by thehollow trunnion d and sleeve m, in the manner and for the purposesubstantially as described.

In witness whereof I hereunto set my hand in presence of two witnesses.

ALBIN FLECHTNER.

Witnesses:

A. MAX HALDRICH, BALLING.

